leanken commented on a change in pull request #29104:
URL: https://github.com/apache/spark/pull/29104#discussion_r459796329
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/joins/BroadcastHashJoinExec.scala
##########
@@ -133,10 +145,39 @@ case class BroadcastHashJoinExec(
val numOutputRows = longMetric("numOutputRows")
val broadcastRelation = buildPlan.executeBroadcast[HashedRelation]()
- streamedPlan.execute().mapPartitions { streamedIter =>
- val hashed = broadcastRelation.value.asReadOnlyCopy()
-
TaskContext.get().taskMetrics().incPeakExecutionMemory(hashed.estimatedSize)
- join(streamedIter, hashed, numOutputRows)
+ if (isNullAwareAntiJoin) {
+ streamedPlan.execute().mapPartitionsInternal { streamedIter =>
+ val hashed = broadcastRelation.value.asReadOnlyCopy()
+
TaskContext.get().taskMetrics().incPeakExecutionMemory(hashed.estimatedSize)
+ if (hashed.isOriginInputEmpty) {
+ streamedIter
+ } else if (hashed.allNullColumnKeyExistsInOriginInput) {
+ Iterator.empty
+ } else {
+ val keyGenerator = UnsafeProjection.create(
+ BindReferences.bindReferences[Expression](
+ leftKeys,
+ AttributeSeq(left.output))
+ )
+ streamedIter.filter(row => {
+ val lookupKey: UnsafeRow = keyGenerator(row)
+ if (lookupKey.allNull()) {
Review comment:
done
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/joins/BroadcastHashJoinExec.scala
##########
@@ -46,14 +46,26 @@ case class BroadcastHashJoinExec(
buildSide: BuildSide,
condition: Option[Expression],
left: SparkPlan,
- right: SparkPlan)
+ right: SparkPlan,
+ isNullAwareAntiJoin: Boolean = false)
extends HashJoin with CodegenSupport {
+ if (isNullAwareAntiJoin) {
+ // TODO support multi column NULL-aware anti join in future.
Review comment:
done
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